November 30, 2020 (Monday)
Mo-A: Keynote
Presider: Takanori Nomura (Wakayama University, Japan)
Mo-A-01
9:00

KeynoteScanless three-dimensional fluorescence imaging
techniques for bioapplications
Osamu Matoba1, Manoj Kumar1, Xiangyu Quan1,
Sudheesh K. Rajput1, Yasuhiro Awatsuji2, Yosuke
Tamada3
1

Kobe University (Japan), 2Kyoto Institute ofTechnology (Japan), 3Utsunomiya University(Japan)

Scanless three-dimensional fluorescence imaging
techniques are important to measure the 3D
behavior of living cells or cellular networks inneuroscience and biology. Conventional twophoton microscopy can measure only one point at atime and then 3D fluorescence distribution can beobtained by scanning a focused point. Experimental
results are presented.
09:35 - 09:50

Break

Mo-B: Sensing I
Presider: Akinori Furuya (Tokushima Bunri University,Japan)
Mo-B-01
9:50

InvitedStudy of Optical Sensing Technologies in
Evaluating Short-Range Wireless Systems with
Quasistatic Fields
Ai-ichiro Sasaki
Kindai University (Japan)
The use of optical sensing technologies forevaluating certain wireless systems is investigated.
The advantage of optical sensing is that the effectsof the measurement apparatus on the systems being
evaluated are eliminated. The basic concepts andapplications of optical sensing are also explained.

Mo-B-02
10:15

Optical Balance Adjustment for Electro-OpticProbe by Changing Laser Diode Wavelength
Riku
Okada1,
Mitsuru
Shinagawa1,
Jun2
Katsuyama , Yoshinori Matsumoto2
1HoseiUniversity (Japan),Corporation (Japan)

2YokogawaElectricThis paper describes the improvement of the signalto-noise ratio (SNR) of an electro-optic probe.
Differential detection is used to improve the SNR
by optical balance adjustment. The optical balanceis adjusted by changing the wavelength of the laser
source. We simulated the optical balanceadjustment using a Jones matrix.
Mo-B-03
10:30

Two-dimensional Waveguide Grating forSensing Three-dimensional Angle Fluctuation
Shogo Ura1, Ryugo Tsuji1, Junichi Inoue1, Kenji
Kintaka2
1KyotoInstitute of Technology (Japan), 2National
Institute of Advanced Industrial Science andTechnology (AIST) (Japan)

A microoptic angle-fluctuation sensor is proposed.
Transmission spectra of a two-dimensional
waveguide
grating
areinvestigatedfor
simultaneous sensing of fluctuations in three angle
directions. Sensitivities by a design example are
estimated to be 5 and 11 nm/deg. for incidence
angles and 0.3 dB/deg. for a polarization angle.
Mo-B-04
10:45

Polarization Noise Analysis of Electro-optic
Sensor System
Mai Tominaga1, Mei Okajima1,
Mitsuru
Shinagawa1,
Jun
Katsuyama2,
YoshinoriMatsumoto2
1HoseiUniversity (Japan),Corporation (Japan)

2YokogawaElectric

We studied the effect of noises of electro-optic (EO)
sensor by using a Jones vector and FFT. The
applied voltage noise to the EO crystal and thecircuit noise cannot be reduced by differentialdetection.
11:00 - 11:15

BreakMo-C: Advanced Optics and Device I
Presider: Daisuke Barada (Utsunomiya University, Japan)
Mo-C-01
11:15

Improving the reconstruction quality of spatial
mode exchange technique by adjusting thediffusion angle of diffuser
Shuanglu Zhang1, Atsushi Okamoto1, Kazuhisa
Ogawa1, Akihisa Tomita1, Taketoshi Takahata2,
Satoshi Shinada3, Yuta Goto 3, Naoya Wada3
1Hokkaido University (Japan), 2OPTOQUEST Co.,

Ltd. (Japan), 3National Institute of Information andCommunications Technology (NICT) (Japan)
To achieve higher exchange performance in thespatial mode exchange technique using volume
holograms, we confirm the dependence of thereconstruction quality on the diffusion angle of therandom optical diffuser. The numerical simulation
results showed a considerable reconstruction quality
enhancement for the two-mode group by adjusting
the diffusion angle.
Mo-C-02
11:30

InvitedTopological source of quantum light
Sunil Mittal1, Venkata Vikram Orre1, Elizabeth A.
Goldschmidt2, Mohammad Hafezi1
1Universityof Maryland (U.S.A.), 2University of
Illinois (U.S.A.)

We will present a topological source of quantum
light where edge states are used for enhanced
generation of energy-time entangled photon pairs,
and for robust engineering of the quantum
correlations between generated photons. We willshow that this spectral engineering allows us toachieve tunable quantum interference between
generated photons.
Mo-C-03
11:55

Mode Compensation using Progressive Phase
Conjugation Technique
Zeyu Shen, Atsushi Okamoto, Shuanglu Zhang,
Kazuhisa Ogawa, Akihisa Tomita
Hokkaido University (Japan)
In order to compensate the mode coupling of thespatial mode beam in the multimode fiber, we
conducted a numerical analysis to evaluate theeffect of mode compensation using progressivephase conjugation (PPC). The simulation results
showed that PPC can effectively compensate themode without requiring external reference beam.
Mo-C-04
12:10

Non-contact Thickness Measurement forDielectric Plate using Electro-Optic Probe
Takumi Horikawa1, Mitsuru Shinagawa1, Jun
Katsuyama2, Yoshinori Matsumoto2
1HoseiUniversity (Japan),Corporation (Japan)

2YokogawaElectricThis paper describes a thickness measurement
method for a dielectric plate using an electro-optic
probe system. The thickness is measured by asignal source with a parallel electrode using twocopper plates. The output voltage increases
monotonically as the thickness of the dielectric
sample plate increases.
12:25 - 13:15

Lunch

Mo-D: Imaging
Presider: Yusuke Nakamura (Hitachi, Ltd., Japan)
Mo-D-01
13:15

InvitedOptical-frequency-comb
microscopy
formultivariate spectroscopic imaging utilizing
amplitude and phase information
Takeo Minamikawa
Tokushima University (Japan)
We propose a novel optical microscopy employing
optical-frequency-comb(OFC).
TheOFC
microscopy enables spatio-temporal imaging withcomprehensive optical information such as
amplitude, phase and polarization spectra andtemporal waveform based on mechanically-scanless
Fourier transformation spectroscopy.

Mo-D-02
13:40

InvitedEfficient full-color computational imaging byutilizing human vision property - “giving in tothe blues”
Ziheng Qiu, Zibang Zhang, Jingang Zhong
Jinan University (P.R.China)
The high performance of computational imaging is
generally at the expense of imaging efficiency(such as, measurements and computational time).

Psychologists found that human eyes have a lower
resolving power in blues than reds and greens. Is it
possible to exploit such a property to achieveefficient full-color computational imaging?
Mo-D-03
14:05

InvitedToward a Thinking Microscope: Deep Learningenabled Computational Microscopy and Sensing
Aydogan Ozcan
UCLA (U.S.A.)
We will discuss recently emerging applications ofthe state-of-art deep learning methods on optical
microscopy and microscopic image reconstruction,
which enable new transformations among different
modalities of microscopic imaging, driven entirely
by image data.

Mo-D-04
14:30

Super-resolution Measurement By Virtual Phase
Conjugation Using A Small Number Of Pixels
For Optical Detection
Satoshi Kawashima, Atsushi Okamoto, Kazuhisa
Ogawa, Akihisa Tomita
Hokkaido University (Japan)
To maximize the performance of super-resolution
measurement using virtual phase conjugation
without using a noise reduction method that
consumes extra imaging resources, relationships
between the size of the signal light area, resolutionof the image sensor, and the amount of noise arequantified and evaluated.

Mo-D-05
14:45

SpatialCharacteristics
ofGuided-mode
Resonance Filter in Oblique Incidence
Shinichiro Okamoto, Kotaro Yoshimoto, Junichi
Inoue, Shogo Ura
Kyoto Institute of Technology (Japan)
A subwavelength waveguide grating on atransparent substate can provide a narrowband
reflection spectrum. Position shift and deformationof a reflection beam in oblique incidence werediscussed with the coupling strength of the grating.

Mo-D-06
15:00

Single Shot Phase Imaging Based on Higher
Order Transport-of-Intensity Equation Using a
Computer-Generated Hologram
Aoi Onishi, Naru Yoneda, Yusuke Saita, Takanori
NomuraWakayama University (Japan)
Measurement accuracy of the transport-of-intensity
phase imaging is improved by using multiple
defocused images which is usually captured withmechanical scanning. To acquire these images
without scanning, a computer-generated hologram
technique has been introduced. In this study, thefeasibility of the proposed method is confirmed bynumerical and optical experiments.

15:15 - 15:30

Break

Mo-E: Digital Holography II
Presider: Xiaodi Tan (Fujian Normal University, China)
Mo-E-01
15:30

InvitedIncoherent-holography-based
computationalimaging system for 3D imaging and infinite
depth-of-field imaging
Teruyoshi Nobukawa, Yutaro Katano, Tetsuhiko
Muroi, Nobuhiro Kinoshita, Norihiko Ishii
Japan Broadcasting Corporation (NHK) (Japan)
Incoherent digital holography (IDH) is an attractive
approach to passive computational imaging. We
previously proposed a bimodal IDH system, which
implements both 3D imaging and infinite depth-offield imaging. This presentation reviews the basic
operation of the proposed system and provides
proof-of-principle experimental results.

Mo-E-02
15:55

InvitedTomographic imaging of blood coagulation
structures in flow cytometry using digitalholographic microscopy
Hideki Funamizu
Muroran Institute of Technology (Japan)
Blood coagulation is an important role inhemostasis process. Aggregation structures of red
blood cells indicate the degree of blood coagulation.
Digital holographic microscopy (DHM) is apowerful tool for quantitative phase imaging of
biological cells. We report tomographic imaging ofblood coagulation structures in flow cytometry
using DHM.
Mo-E-03
16:20

Twin-Image Reduction of Low-Coherence InLine Digital Holography Using a Diffuser
Kenya Kawano, Takanori Nomura
Wakayama University (Japan)
A twin-image reduction method of digitalholography using an LED and a diffuser wasproposed. As the size of the optical system iscompact against a conventional system, it has
portability. Simulation results show that theproposed method can obtain the reconstructed
image comparable to the laser-based conventional
method.

Mo-E-04
16:35

Compressed Sensing Based Holographic Particle
Velocimetry
forComplex
Microflow
Measurement
Kan Itakura, Shuhei Yoshida
Kindai University (Japan)
In this study, we applied compressed sensing (CS)to holographic particle tracking velocimetry (HPTV)
for measurement of the complex microflow. In theproposed method, the particle distribution can bedirectly reconstructed with high accuracy byapplying the compressed sensing based on thesparse particle distribution.

Mo-E-05
16:50

Evaluation of Spatial Resolution in Motionless
Optical Scanning Holography
Naru Yoneda, Yusuke Saita, Takanori Nomura
Wakayama University (Japan)
Motionless optical scanning holography (MOSH)
has been proposed to realize single-pixel 3D
incoherent imaging.In MOSH, a reproduced
hologram is expressed as a convolution between an
object and a Fresnel zone plate.In this study, a point
spread function of MOSH is evaluated bynumerical simulation.

17:05 - 17:20

BreakMo-F: Optical Memory II
Presider: Kimihiro Saito (Kindai University TechnicalCollege, Japan)
Mo-F-01
17:20

InvitedPhase data acquisition and multiplexing
techniques for in-line holographic data storage
based on computer-generated holograms
Yusuke Saita, Naru Yoneda, Aoto Matsumoto,Takanori Nomura
Wakayama University (Japan)
Holographic data storage using a computergenerated hologram has been researched. Our
recent studies about phase data acquisition andmultiplexing techniques to improve its recording
capacity are based on a digital holographic
technique and the reference wave correlation. In
this presentation, details and evaluations ofrespective approaches are introduced.

Mo-F-02
17:45

Convolutional
NeuralNetwork
Based
Demodulation for Constant-Weight Codes in
Holographic Data Storage
Kurokawa Shinya, Shuhei Yoshida
Kindai University (Japan)
We systematically examined the improvement
effect of CNN based demodulation method forconstant-weight codes and analyzed the types ofsalient errors.

Mo-F-03
18:00

Transport of Intensity Phase Data-Page
Acquisition with Polarization Directed Flat Lens
in Coaxial Holographic Data Storage
Yuta Takahashi, Yusuke Saita, Naru Yoneda,
Takanori Nomura
Wakayama University (Japan)
Storage capacity of coaxial holographic data storage
can be increased by using phase information. A
polarization directed flat lens is introduced tosystem for phase measurement based on transportof intensity equation. Simulation results confirm thefeasibility of the proposed method.

Mo-F-04
18:15

CNN Demodulation for Complex Amplitude
Modulation Code in Holographic Data Storage
Yutaro Katano, Teruyoshi Nobukawa, TetsuhikoMuroi, Nobuhiro Kinoshita, Norihiko Ishii
Japan Broadcasting Corporation (NHK) (Japan)
We have proposed a demodulation method using
two convolutional neural networks (CNNs) forcomplex amplitude modulation code in holographic
data storage. Our compact CNNs individually andaccurately demodulate the symbol position inmodulation block and complex amplitude signal
without the four-step phase-shift method,respectively.